Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

mysqlÈ¡µÃÊý¾Ý¿âËùÓбíÃûºÍ×Ö¶Î×¢ÊÍ

1¡¢È¡×Ö¶Î×¢ÊÍ
Select COLUMN_NAME ÁÐÃû, DATA_TYPE ×Ö¶ÎÀàÐÍ, COLUMN_COMMENT ×Ö¶Î×¢ÊÍ
from INFORMATION_SCHEMA.COLUMNS
Where table_name = 'companies'##±íÃû
AND table_schema = 'testhuicard'##Êý¾Ý¿âÃû
AND column_name LIKE 'c_name'##×Ö¶ÎÃû
2¡¢È¡µÃ±í×¢ÊÍ
Select table_name ±íÃû,TABLE_COMMENT ±í×¢ÊÍ from INFORMATION_SCHEMA.TABLES Where table_schema = 'testhuicard' ##Êý¾Ý¿âÃû
AND table_name LIKE 'companies'##±íÃû
²Î¿¼http://dev.mysql.com/doc/refman/5.1/zh/information-schema.html.
mysqlÊֲ᣺23.1. INFORMATION_SCHEMA±í
3¡¢È¡µÃijÊý¾Ý¿âÏÂËùÓбíµÄ×¢ÊÍ
       $tt = mysql_query("show table status;");
       $table_info£½array();
       while($re = mysql_fetch_array($tt,MYSQL_ASSOC)){
                        //$re["Comment"],Õâ¸ö¾ÍÊDZíµÄ×¢ÊÍ
                        $table_info[] = $re;
        } ......
¸üÐÂ×ÔÔöÖµ ALTER TABLE [Table]members AUTO_INCREMENT=10000


Ïà¹ØÎĵµ£º

mysql´æ´¢¹ý³Ì»ù±¾º¯Êý


Ò».×Ö·û´®Àà 
CHARSET(str) //·µ»Ø×Ö´®×Ö·û¼¯
CONCAT (string2  [,... ]) //Á¬½Ó×Ö´®
INSTR (string ,substring ) //·µ»ØsubstringÊ×´ÎÔÚstringÖгöÏÖµÄλÖÃ,²»´æÔÚ·µ»Ø0
LCASE (string2 ) //ת»»³ÉСд
LEFT (string2 ,length ) //´Óstring2ÖеÄ×ó±ßÆðÈ¡length¸ö×Ö·û
LENGTH (string ) //string³¤¶È
LO ......

MYsql ÒìµØ±¸·Ý½Å±¾

ÔÚÒìµØµÄ·þÎñÆ÷±¸·ÝMysqlʱ£¬ÒìµØµÄ·þÎñÆ÷ûÓа²×°MysqlÊý¾Ý¿â£¬±¸·ÝµÄmysqldumpÃüÁîÊDz»ÄÜÉúЧµÄ¡£ËùÒÔ¿ÉÒÔ°Ñ°²×°mysqlÊý¾Ý¿âËùÔÚ·þÎñÆ÷ÖеÄmysqldump.exe£¨È磺C:\Program Files\MySQL\MySQL Server 5.0\binĿ¼ÖеÄmysqldump.exe£©¿½±´µ½ÒìµØ·þÎñÆ÷ÖеÄÒ»¸öĿ¼ÖУ¨È磺F:\MySQLBackup£©¡£
 
±ÈÈçÎļþà ......

mysqlÍü¼ÇrootÃÜÂëµÄ½â¾ö

mysqlÍü¼ÇrootÃÜÂëµÄ½â¾ö
Ò». MySQLÃÜÂëµÄ»Ö¸´·½·¨Ö®Ò»
Èç¹ûÍü¼ÇÁËMySQLµÄrootÃÜÂ룬¿ÉÒÔÓÃÒÔÏ·½·¨ÖØÐÂÉèÖãº
1. KILLµôϵͳÀïµÄMySQL½ø³Ì£»
killall -TERM mysqld
2. ÓÃÒÔÏÂÃüÁîÆô¶¯MySQL£¬ÒÔ²»¼ì²éȨÏ޵ķ½Ê½Æô¶¯£»
safe_mysqld --skip-grant-tables &
3. È»ºóÓÿÕÃÜÂ뷽ʽʹÓÃrootÓû§µÇ¼ MySQL£» ......

c# Á¬½ÓMySqlÊý¾Ý¿âµÄÁ½ÖÖ·½·¨

1¡¢ÓÃMySQLDriverCSÁ¬½ÓMySQLÊý¾Ý¿â
ÏÈÏÂÔغͰ²×°MySQLDriverCS£¬µØ
Ö·£º
http://sourceforge.net/projects/mysqldrivercs/
ÔÚ°²×°Îļþ¼ÐÏÂÃæÕÒµ½
MySQLDriver.dll
£¬È»ºó½«
MySQLDriver.dll
Ìí¼ÓÒýÓõ½ÏîÄ¿ÖÐ
×¢£ºÎÒÏÂÔصÄÊÇ°æ±¾ÊÇ

MySQLDriverCS-n-EasyQueryTools-4.0.1-DotNet2.0.exe
 
using

S ......

¹ØÓÚMySQLµÄÓû§²Ù×÷

Ò»¡¢²é¿´Óû§
1¡¢ÏÔʾµ±Ç°Ê¹ÓõÄuser¼°host£º
mysql>select USER();
2¡¢ÏÔʾ¸ÃÊý¾Ý¿âÊÚȨµÇ½µÄÓû§Ãû(²»ÏÔʾÖظ´Óû§Ãû)£º
mysql>use mysql;
mysql>select distinct(User) from user;
3¡¢ÏÔʾ¸ÃÊý¾Ý¿âÊÚȨµÇ½µÄÓû§Ãû¼°hostÏÞÖÆ£º
£¨1£©·½·¨Ò»£º
mysql>use mysql;
mysql>select User,host from u ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ